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Phrynocephalus Persicus
''Phrynocephalus persicus'', commonly known as the Persian toad-headed agama, is a small diurnal desert lizard of the family Agamidae. It is the westernmost representative of the Central Asian genus of toad-headed agamas ''Phrynocephalus'' and is only known from deserts and semideserts of Iran and possibly Azerbaijan. Taxonomy Phylogeny within the genus ''Phrynocephalus'' is not well understood yet. There is a lack of data and controversy between opinions regarding both phylogenetic relationships and species vs. subspecies status of the different forms ''Phrynocephalus helioscopus'' and ''Phrynocephalus persicus'', also called the "helioscopus-persicus complex". There is an ongoing scientific debate about the phylogeny and the taxonomic format of ''Phrynocephalus persicus''. Recent studies suggest existence of at least two distinct subspecies: the Persian toad-headed agama (''Phrynocephalus persicus persicus'' De Filippi, 1863) from northern and central Iran, and Horvath's toad- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lajos Méhely
Lajos () is a Hungarian masculine given name, cognate to the English Louis. People named Lajos include: Hungarian monarchs: * Lajos I, 1326-1382 (ruled 1342-1382) * Lajos II, 1506-1526 (ruled 1516-1526) In Hungarian politics: * Lajos Aulich, second Minister of War of Hungary * Lajos Batthyány, first Prime Minister of Hungary * Count Lajos Batthyány de Németújvár, county head of Győr and Governor of Fiume * Lajos Dinnyés, Prime Minister of Hungary from 1947 to 1948 * Lajos Kossuth, Hungarian lawyer, politician and Regent of Hungary In football: * Lajos Baróti, coach of the Hungary national football team * Lajos Czeizler, Hungarian football coach * Lajos Détári, retired Hungarian football player * Lajos Sătmăreanu, former Romanian football player * Lajos Tichy, Hungarian footballer In art: * Lajos Csordák, Hungarian/Slovak painter * Lajos Markos, Hungarian American painter * Lajos Koltai, Hungarian cinematographer and film director In Hungarian literature: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agamidae
Agamidae is a family (biology), family of over 300 species of iguanian lizards indigenous to Africa, Asia, Australia, and a few in Southern Europe. Many species are commonly called dragons or dragon lizards. Overview phylogenetics, Phylogenetically, they may be sister to the Iguanidae, and have a similar appearance. Agamids usually have well-developed, strong legs. Their tails cannot be shed and regenerated like those of geckos (and several other families such as skinks), though a certain amount of regeneration is observed in some. Many agamid species are capable of limited change of their colours to regulate their body temperature. In some species, males are more brightly coloured than females, and colours play a part in signaling and reproductive behaviours. Although agamids generally inhabit warm environments, ranging from hot deserts to tropical rainforests, at least one species, the mountain dragon, is found in cooler regions. They are particularly diverse in Australia. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phrynocephalus
''Phrynocephalus'' is a genus which includes 33 species of small and medium-sized agamid lizards, commonly called toadhead agamas or toad-headed agamas, that inhabit open arid and semiarid environments of Asia and Eastern Europe. The systematics of this genus are very complicated with many controversial points of view about the unclear phylogeny of this group. All representatives of this genus have adopted the so-called "sit and wait" hunting strategy and they actively use visual orientation when watching for food. In general, the ecological niche and role of ''Phrynocephalus'' species in lizard communities of arid environments of Asia are poorly studied, but seem to be similar to that of ''Phrynosoma, Cophosaurus, Holbrookia, Uta'', and '' Sceloporus'' in the New World, as well as ''Moloch'' in Australia. Species The following 34 species are recognized as being valid.Russia.html" ;"title="Astrakhan Oblast, Russia">Astrakhan Oblast, Russia. *''Phrynocephalus ornatus'' *''Phr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogeny
A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree, indicating common ancestry. In a ''rooted'' phylogenetic tree, each node with descendants represents the inferred most recent common ancestor of those descendants, and the edge lengths in some trees may be interpreted as time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units, as they cannot be directly observed. Trees are useful in fields of biology such as bioinformatics, systematics, and phylogenetics. ''Unrooted'' trees illustrate only the relatedness of the leaf nodes and do not require the ancestral root to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Species
A vulnerable species is a species which has been Conservation status, categorized by the International Union for Conservation of Nature as being threatened species, threatened with extinction unless the circumstances that are threatened species, threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species' home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity (animal), captivity, an example being the military macaw. There are currently 5196 animals and 6789 plants classified as Vulnerable, compared with 1998 levels of 2815 and 3222, respectively. Practices such as cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically. Criteria The International Union for Conservation of Nature uses several criteria to enter species in this category. A tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phrynocephalus Horvathi
''Phrynocephalus horvathi'' is a small diurnal desert lizard in the family Agamidae. It is endemic to the valley of the Aras River and considered Critically Endangered. Taxonomy The phylogeny within the genus ''Phrynocephalus'' is not well understood and has been the subject of recent revisions. Following Melnikov et al. (2008), the IUCN considers ''P. horvathi'' and ''P. persicus'' different species rather than subspecies of ''P. persicus'' (for details see ''Phrynocephalus persicus''). This usage has been followed here, contrary to the Reptile Database. Description The neotype, an adult male, measures in snout–vent length, and has a tail. The body is slender and depressed; also the head is depressed. There is a crest, consisting of a row of nine thorn-like scales, along the middle line of neck. Distribution and habitat ''P. horvathi'' occurs in several isolated populations the valley of the Aras River in Armenia, Azerbaijan, and Turkey Turkey ( tr, Türkiye ), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lacertidae
The Lacertidae are the family (biology), family of the wall lizards, true lizards, or sometimes simply lacertas, which are native to Afro-Eurasia. It is a diverse family with at least 300 species in 39 genera. They represent the dominant group of reptiles found in Europe. The group includes the genus ''Lacerta (genus), Lacerta'', which contains some of the most commonly seen lizard (thus "true" lizard) species in Europe. Habitat The European and Mediterranean species of lacertids live mainly in forest and scrubland, scrub habitats. ''Eremias'' and ''Ophisops'' species replace these in the grassland and desert habitats of Asia. African species usually live in rocky, arid areas. ''Holaspis'' species are among the few arboreal lacertids, and its two species, ''Holaspis guentheri'' and ''Holaspis laevis'', are gliders (although apparently poor ones), using their broad tail and flattened body as an aerofoil. Description Lacertids are small or medium-sized lizards. Most species are le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptic Coloration
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate, as well as making general aiming easier. The majority of camouflage methods aim for crypsis, often through a general resemblance to the background, high contrast disruptive coloration, eliminating shadow, and countershading. In the open ocean, where there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the bioluminescence, ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chamel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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